/*
 *  Copyright (c) 2009, Hugo Augusto Alves
 *  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are met:
 *      * Redistributions of source code must retain the above copyright
 *        notice, this list of conditions and the following disclaimer.
 *      * Redistributions in binary form must reproduce the above copyright
 *        notice, this list of conditions and the following disclaimer in the
 *        documentation and/or other materials provided with the distribution.
 *      * Neither the name of the Hugo Augusto Alves nor the
 *        names of its contributors may be used to endorse or promote products
 *        derived from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
 *  EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 *  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 *  DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
 *  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 *  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 *  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 *  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package org.wiscriptor.io;

import java.io.File;
import java.net.MalformedURLException;
import java.net.URISyntaxException;
import java.net.URL;
import java.security.CodeSource;

/**
 *
 * @author Hugo
 */
public class FileLoader {

    private static FileLoader instance = null;
    private CodeSource src;

    private FileLoader() {
        src = FileLoader.class.getProtectionDomain().getCodeSource();
    }

    public static FileLoader getInstance() {
        instance = (instance == null) ? new FileLoader() : instance;
        return instance;
    }

    public File loadFile(String filename) throws MalformedURLException, URISyntaxException, NullPointerException {
        URL url = new URL(src.getLocation(), filename);
        return new File(url.toURI());
    }

    public File loadFile(String folder, String filename) throws MalformedURLException, URISyntaxException, NullPointerException {
        File file = new File(folder, filename);
        URL url = new URL(src.getLocation(), file.getPath());
        return new File(url.toURI());
    }

}
